Recommended replacement interval for the part category Thermostat : 50000 km

Important!

This replacement procedure can be used for:
MERCEDES-BENZ 190 (W201) E 1.8 (201.018), MERCEDES-BENZ 190 (W201) 2.0 (201.022), MERCEDES-BENZ 190 (W201) E 2.0 (201.024), MERCEDES-BENZ 190 (W201) 2.0 (201.023), MERCEDES-BENZ 190 (W201) 2.0 (201.023), MERCEDES-BENZ 190 (W201) E 2.0, MERCEDES-BENZ 190 (W201) E 2.0 (201.024), MERCEDES-BENZ 190 (W201) E 2.3 (201.028) … View more

The steps may slightly vary depending on the car design.

How to change engine radiator and thermostat on MERCEDES W201 [TUTORIAL AUTODOC]

All the parts you need to replace – Thermostat for 190 (W201) and other MERCEDES-BENZ models

Alternative products

Thermostat

028 287 0000 MEYLE Thermostat

8,14 GBP

Shop

4078.87D WAHLER Thermostat

10,41 GBP

Shop

DT1044V DAYCO Thermostat

11,62 GBP

Shop

09671 FEBI BILSTEIN Thermostat

13,41 GBP

Shop

QTH138 QUINTON HAZELL Thermostat

13,47 GBP

Shop

QTH138K QUINTON HAZELL Thermostat

13,55 GBP

Shop

V30-99-2256 VEMO Thermostat

13,77 GBP

Shop

400 774 TOPRAN Thermostat

13,78 GBP

Shop

TH05586G1 GATES Thermostat

16,77 GBP

Shop

SKTC-0560018 STARK Thermostat

17,25 GBP

Shop

Replacement: engine thermostat – Mercedes W201. Tools you might need:

                      Wire brush
                    
                      All-purpose cleaning spray
                    
                      Torque wrench
                    
                      Combination spanner #10
                    
                      Drive socket # 7
                    
                      Drive socket # 8
                    
                      Drive socket # 10
                    
                      Ratchet wrench
                    
                      Long nose pliers
                    
                      Funnel
                    
                      Fluid container
                    
                      Fender cover

Buy tools

Replacement: engine thermostat – Mercedes W201. AUTODOC recommends:

Check the condition of the coolant every time you replace the thermostat. Change the coolant if necessary.
Please note: all work on the car – Mercedes W201 – should be done with the engine switched off.

Carry out replacement in the following order:

Step 1

Open the bonnet.
Step 2

Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
Step 3

Unscrew the coolant reservoir cap.

Step 4

Lift the car using a jack or place it over an inspection pit.

Step 5

Prepare a container for fluids.

Step 6

Open the coolant drain tap.
Step 7

Drain the coolant from the engine.

Replacement: engine thermostat – Mercedes W201. AUTODOC experts recommend:
All work should be done with the engine stopped.Wait until the coolant has completely flowed out of the drain hole.
Step 8

Close the coolant drain tap.

Step 9

Loosen the clamp of the expansion tank hose. Use a drive socket #7. Use a ratchet wrench.
Step 10

Detach the expansion tank hose from the thermostat housing.
Step 11

Detach the coolant hose.
Step 12

Unscrew the thermostat housing fasteners. Use a drive socket #10. Use a ratchet wrench.
Step 13

Remove the fastening bolts.
Step 14

Remove the thermostat together with the housing.

Replacement: engine thermostat – Mercedes W201. Professionals recommend:
Caution! Coolant may leak out of the coolant lines and thermostat housing.
Step 15

Clean the thermostat housing mounting seat. Use all-purpose cleaning spray.
Step 16

Clean the thermostat mounting seat. Use a wire brush. Use all-purpose cleaning spray.

Step 17

Install a new thermostat.
Step 18

Install the thermostat housing.

Replacement: engine thermostat – Mercedes W201. Tip from AUTODOC experts:
Be sure to use a new O-ring when installing the sensor.
Step 19

Install the fastening bolts.
Step 20

Tighten the thermostat housing fasteners. Use a drive socket #10. Use a torque wrench. Tighten it to 12 Nm torque.
Step 21

Attach the coolant hose.
Step 22

Secure the coolant hose clamp. Use a drive socket #8. Use a ratchet wrench.
Step 23

Connect the expansion tank hose to the thermostat housing.
Step 24

Tighten the clamp of the expansion tank hose. Use a drive socket #7. Use a ratchet wrench.
Step 25

Remove the coolant reservoir cap.

Step 26

Insert the funnel.
Step 27

Pour coolant in the coolant reservoir.

Replacement: engine thermostat – Mercedes W201. Tip:
Only use the coolant recommended by the manufacturer.The coolant level should be at the MAX mark.Wait until the air goes out of the system.
Step 28

Install the coolant reservoir cap.
Step 29

Screw on the coolant reservoir cap.
Step 30

Run the engine for a few minutes.

AUTODOC recommends:
This should be done in order to remove residual air from the cooling system and to check if the components are operating correctly.
Step 31

Shut off the engine.

Step 32

Remove the fender protection cover.
Step 33

Close the hood.

Was this manual helpful?

Please rate this manual on a scale from 1 to 5. If you have any questions, feel free to ask us.

Searching for the right tyres?

Find out which tyre and wheel sizes are compatible with the MERCEDES-BENZ 190 (W201) model.

Mercedes W201 tyre size

How to change ignition coil on Mercedes W201 – replacement guide

Free download PDF
1.56 MB
How to change engine radiator on Mercedes W201 – replacement guide

Free download PDF
1.93 MB
How to change ignition leads on Mercedes W201 – replacement guide

Free download PDF
1.63 MB
How to change spark plugs on Mercedes W201 – replacement guide

Free download PDF
1.34 MB
How to change serpentine belt on Mercedes W201 – replacement guide

Free download PDF
829.44 KB
How to change temperature sensor and engine thermostat on MERCEDES-BENZ 190 (W201) – replacement guide

Free download PDF
2.14 MB

How to change temperature sensor and engine thermostat on MERCEDES-BENZ 190 (W201) – replacement guide

Free download PDF
2.14 MB
How to change engine radiator on Mercedes W201 – replacement guide

Free download PDF
1.93 MB
How to change temperature sensor and engine thermostat on Mercedes W124 – replacement guide

Free download PDF
2.54 MB
How to change temperature sensor and engine thermostat on MERCEDES-BENZ SPRINTER 2-t Box (901, 902) – replacement guide

Free download PDF
2.15 MB
How to change temperature sensor and engine thermostat on MERCEDES-BENZ C-Class T-modell (S202) – replacement guide

Free download PDF
2.15 MB
How to change temperature sensor and engine thermostat on MERCEDES-BENZ SPRINTER 4-t Platform/Chassis (904) – replacement guide

Free download PDF
2.15 MB

Your profile is your personal assistant.

It can track car expenses, keep a car log and replacement schedule, and save favourite materials, notes and documents

Install the AUTODOC CLUB app!

Your personal car expenses manager, maintenance tips, reminders about upcoming appointments and service intervals, DIY repair instructions – all this on your phone.

Scan

To download the app:

- scan the QR code
- download from App Store
- download from Google Play

Top 5 tips to prevent car rust | AUTODOC tips

6K views

Published on: 27/07/2023
DIY starter repair | AUTODOC tips

56K views

Published on: 31/08/2023
DIY alternator repair | AUTODOC tips

1M views

Published on: 30/11/2022
Top 5 reasons why your car squeals | AUTODOC Tips

6K views

Published on: 26/10/2023